Improvement in machines for cutting leather



,anni @time ABERDEEN narrator Noam Burncnwarnn,,M'Assaonusnrrs Letters Patent No. 112,353, dated March 7, 1871.

" ``l`IIIfIPaovEIIIIENT IN MAcHINEs Fon-.CUTTING LEATHER.

The Schedule referred to in these/Letters Pai-,entend making part of the same.

` To all persons to ,whom these presents ma/y come:

I lBeit known thatI, Aenannnnlnirmof North I Bridgewater, inmthefcountylof Plymouth and `State ofV "Massachusettsahave invented a new and uscfullm;

proved lMaehinefor Cutting Leather into Counters for Bootsand Shoes; andI` do hereby declare the same to be fully describedin the following 'spcciiication and represented in the accompanying drawing, of whieh- Figure 1 `denotes a top view;

Figure`2, a front elevation; and I Figure, anendlelevationof such machine.

In .the said,dravi'ing-` A denotes therframe for supporting the. main oper,- ative'parts.` i I I within aimais frame ne three Staes, n o D,

which are ldisposed with respect `to 'each other as seen ing.2. l I

Two fof "the said shaftsfvia., O and are out of Iparallelismwithone another fand with thethird shaft D, andcarry or havexed on their adjacent ends two tapering'feed-rollers, E E, there being one of, suchV rollers to each-of the saidshaft's D. Y y

The three shafts are connected by a train of gears,

`Gr E I, there being one of `snch lgears to each of `the shafts, thersame being inIorder that rotary motion may "he transmitted from the drivingshaft B to each of the other shaftsl whenever'snch shaft B may be I putin revolution.

` The lower shaft `not only has one of 'its journals, supported in a bearin' made in the 'art a of the frame, but hasjthe otherjopirnal supported in a-bear `,ing in a post orstandard, K, which is separate from the frame A, and `at itslow'erend is sustained in and jointed to the inferiorarni of 'a lever, L, which is arranged underneath the frame, and when the machine 'isin operation is to have a Iweight suspended from its I 4superior arm, the `object of such weight, ilever, and 'standard beingito force the IIlower feed-roller toward the upper feed-roller, and allow the former to move or be moved away from the latter inorder to `accom modate the rollersto the leather to be reduced to conu- `ters, as such leather may `varypin thickness.

In advance of the bite of the two feed-rollers there is asplitting-knife, M, fastened by a setserew Inpon a metallic plate, one'edge of which is supported in the groovehmade' in astationary bracket or rail, bl.

The opposite edge of the knife-supportinglplate is similarlysustainedin a bracket, yO, projecting from the movable `standard K," the whole being 4n` such manner that any verticalnievement of such standard Iand thelower feed-roller, whether suehmovement be Iupward or downward, shall canse theknife to be In ove'd with the bracketO, and so as to vary the declinationjof thecutting-edgc of the knife.

The said cutting-edge of the knife is arranged diag! onally with respect to the bite of the rollers, in order that, while cutting through a strip of leather in order to separate a counterv therefrom, it' may make such cut at an inclination with the opposite flat surfaces of .the leather, in` manner asshown at c d c d in Figure 4, which represents an edge view of a strip of leather and the lines Vof cuts for the counters lt S T U.

In consequence of therollers being tapering, they will cause each cut through the leather to be Inadein a curve, which will impart to each counter the form as represented in Figure 5,- the transverse section of such counter being a parallelograrn, as shown in fig. 4.

In order to guide the leather properly between the I rollers, I employ a table or platform, A2, arranged aside of or with respect to them in manner as represented, such table heilig provided with a feed-board, B2, pivotcd to the table, or capable of turning ,horizontally on a center, G2, the radins of the circle of motion 'of such board corresponding with that of the curve of the knife-cut caused `by the action -of the feed-rollers.`

`Such feed-board I also provide with a ledge, D", for

theedge of thepiece of leather to rest against; and-V fnrthermore, there is a ledge or gauge, Ei, for the end ofthe stripto abut against, the said ledgebeing arranged as represented. y

ln operating'with the machine a strip of leather to `he reduced to counters isto b e laid on the `pivoted feed-board B2, one end of the said piece being pressed e against the gauge E2. One edge of the piece is also to bepressed. against the inner edge-of the ledge D2.'

By means of these devices the leather is to be presented to and between the feed-rollers, they1 being .supposed to be in revolution in directions which will canse them to seize on the leather and force it against the cutting-edgeof the knife.

As the thickness of the leather may increase more or less, so will the lower vfeed-roller be pressed away ,frein the upper one, and at the same time will 'Inove downward one edge of the knife, so as to impart a' greater declination ofthe cutting-edge of such knife As thethickness of the leather may decrease the lower feed-roller will rise, the knife also being raised at one and the sam'e edge. Thus it will be seen that the' cuttingcdgeof the Vknife willl be always in the diagonal of the bite of therrollers, however that bite may increase or diminish in width.

I make no claim vto the invention of aknife and`c v lindrical feed-rollers for the purpose of splitting a piece of leather; nor do I herein make anyclaiin to the matters, combinations, or devices set iorth in the two claims of Letters Patent No. 44,318, dated thelOth day of September, A. D. 1864, and granted to nie.

What I herein. claimlas my invention is as follows:

1. The arrangement and combination of the pivoted feed-board B2 with the conical rollers E F and the cutting-knife M,l arranged with them as specified.

2. The arrangement and combination of the pivoted feed-board B2 With the conical rollers E F, the cnttingknife M, and mechanism as described, or its equivalent, for adjusting, substantially as and for the purpose as' explained, the declination of the knife in accordance with the variation of the distance between the feed-rollers.

3. The arrangement and combination of the ledge D2 and the gauge E2 with the pivoted feed-board B2, the table or platform A2, the conical rollers E F and their operative mechanism, and the knife M.

Witnesses:

It. H. EDDY, S. N. PIPER. 

